Trig in physics

[Drrrrrr. Celty]

It appears that due to orgo being filled too quickly this year I'm stuck doing physics instead. So.... What parts of trig should I know to do well in physics? Like should I just know what cos and sin is or do I need to know things like Sin(2x) = 2sinxcosx? I.e identities.

Anything else that you can mention will be nice..

Btw. Algebra based physics, not calc based.

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[Mithril]

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[Drrrrrr. Celty]

Know sin/cos/tan of 0, 30, 45, 60, and 90 degrees and the Pythagorean formula.

Thx.

 

[ILikeDrugs]

For algebra based physics, you should know how to push the sin/cos/tan button on your calculator and know SOHCAHTOA. That is all.

 

[Mithril]

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[getright]

sohcahtoa. That's it.

 

[cclewis]

Some Old Hippie

Caught Another Hippie

Tripping On Acid

 

[TriagePreMed]

Honestly, someone that's never taken trig could easily ace physics. It doesn't take more than 10 seconds of the professor's explaining and formulas to learn all you need for it.

Scroll down to the trig video if curious: http://www.freelance-teacher.com/videos.htm

 

[AllDay24]

Now, we can't forget about SHO right? You have to understand how the sin and cos curves are related what they look like as well as all the variables.

cos(pi/2-theta) = sin(theta) and sintheta2 + costheta2 = 1 are useful.